According to a recent survey of 1200 people, 61% feel that the president is doing an acceptable job. We are interested in the population proportion of people who feel the president is doing an acceptable job.

b Which distribution should you use for this problem? Explain your choice.

c Construct a 90% confidence interval for the population proportion of people who feel the president is doing an acceptable job.

i State the confidence interval.

ii Sketch the graph.

iii Calculate the error bound.

bN(0.61,(0.61)(0.39)1200)

c

i CI: (0.59, 0.63)

iii EB = 0.02

A survey of the mean amount of cents off that coupons give was done by randomly surveying one coupon per page from the coupon sections of a recent San Jose Mercury News. The following data were collected: 20¢; 75¢; 50¢; 65¢; 30¢; 55¢; 40¢; 40¢; 30¢; 55¢; $1.50; 40¢; 65¢; 40¢. Assume the underlying distribution is approximately normal.

c Which distribution should you use for this problem? Explain your choice.

d Construct a 95% confidence interval for the population mean worth of coupons.

i State the confidence interval.

ii Sketch the graph.

iii Calculate the error bound.

e If many random samples were taken of size 14, what percent of the confident intervals constructed should contain the population mean worth of coupons? Explain why.

An article regarding interracial dating and marriage recently appeared in the
Washington Post . Of the 1709 randomly selected adults, 315 identified themselves as Latinos, 323 identified themselves as blacks, 254 identified themselves as Asians, and 779 identified themselves as whites. In this survey, 86% of blacks said that their families would welcome a white person into their families. Among Asians, 77% would welcome a white person into their families, 71% would welcome a Latino, and 66% would welcome a black person.

a We are interested in finding the 95% confidence interval for the percent of all black families that would welcome a white person into their families. Define the Random Variables
Xsize 12{X} {} and
P'size 12{P'} {} , in words.

b Which distribution should you use for this problem? Explain your choice.

fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.

Tarell

what is the actual application of fullerenes nowadays?

Damian

That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.

Tarell

Join the discussion...

what is the Synthesis, properties,and applications of carbon nano chemistry

Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.